Please consider this note a formal request to have my free account utilize "unmetered space".
My account is several years old, uses close to the upper limit of of the initially allowed space (substantially more than half) and I believe it to be in good standing (is "current" and hosts a working...
I, too, have been experiencing email problems (server won't connect type errors using a previously working account on Mac's email client "Mail" -- no changes). Based on the number of folks facing issues not previously faced it would appear something is amiss on the x10 side.